Extracting Specific Fields from JSON

When extracting values from JSON with fx, strings are printed as raw text by default. To get properly quoted JSON output, you can append JSON.stringify as a second argument.

Single Field

cat data.json | fx .user.name

Output:

"Alice"

Multiple Fields

cat data.json | fx '{name: x.user.name, email: x.user.email}'

Output:

{
  "name": "Alice",
  "email": "alice@example.com"
}

From an Array of Objects

cat users.json | fx 'map(u => u.name)'

Output:

[
  "Alice",
  "Bob"
]